We did look at some retirement villages... from the outside. Living in your neighbours' laps (both sides) did not appeal to us. We were on a 0.3 acre block, and still had one neighbour 1.75m from our bedroom window, and the other 3.5m from the kitchen! It was a long block.
We also looked at the Homebase developments. Standard 3.6m garage door still left us 6cm over-size. They are catering for the smaller m/h market.
We've moved from 0.3 acres to 1.25 acres... and enough space for Girt between the garage and my 10mx8m 'Playpen'. Nearest neighbour is 75m away!
